JP2000280919A - Tilt column bracket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the twisting of a steering shaft during the swinging of a steering, and to easily absorb a loaded applied on the steering shaft. SOLUTION: When a distance between the shaft hole 8 of the tilt shaft of a tilt lower bracket 21 and a universal joint in the tip of a steering shaft 4 is reduced and a steering column is tilted, the rotation of a portion connected to the universal joint in the tip of the steering shaft 4 becomes small, and no twisting occurs in the steering shaft 4. Further, the inclined plate part 23 of the tilt lower bracket 21 supporting the steering column 3 is disposed to be orthogonal to the steering column 3, and when a load is applied to the steering shaft 4 to move toward the front of a car body; the inclined plate part 23 is distorted to easily absorb the load.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt column bracket of a tilt mechanism for movably holding a column of a steering shaft of an automobile.

[0002]

2. Description of the Related Art Some automobiles are provided with a tilt mechanism in which a steering column is swung up and down so that the height and angle of a steering wheel can be adjusted according to the physique of a driver to facilitate driving. is there. The tilt trower bracket of the tilt mechanism will be described with reference to FIG.

[0003] Tilt trouser bracket 2 of tilt mechanism 1
Is a plate member 5 which pivotally supports the steering column 3 and has an insertion hole (not shown) through which the steering shaft 4 is inserted in the center, and U-shaped members 6 which are provided on both upper sides thereof. The plate member 5 and the U-shaped member 6 are integrally fixed.

[0004] On both upper sides of the plate member 5, parallel portions 5a parallel to the steering column 3 are formed, and in the parallel portions 5a, a shaft hole of a tilt shaft 7 for swingably supporting the steering column 3 is formed. 8 are formed. The U-shaped member 6 is mounted above the parallel portion 5a. The U-shaped member 6 is arranged so that its plate-like leg portion 6a is orthogonal to the steering column 3, and the opening side thereof is arranged toward the front of the vehicle. Therefore, the standing wall 6b, which is the ceiling, is located at the rear of the vehicle.

Further, the upper leg 6a of the U-shaped member 6 has a slit (not shown) having the same shape as the slit 10 formed on the other tillor bracket 9 shown in FIG. Are formed. In FIG. 8, reference numeral 11 denotes an insertion hole through which the steering shaft 3 and the like are inserted. Arrow A indicates the direction in which the tilt trower bracket 9 is fitted into the vehicle body.

[0006] Then, an assembly component in which the motor 12 and the like are integrally mounted in addition to the steering column 3 is mounted on the tilt trower bracket 2 of FIG. 6 from the rear of the vehicle (right side in FIG. 6). The slits of the legs 6a of the U-shaped member 6 of the tilt trower bracket 2 with the brackets are connected to bolts or nuts provided on a bracket on the vehicle body side, for example, a steering hanger bracket 13 attached to a steering support member (not shown). After joining, they are fixed together. In FIG.
Is the steering shaft 4 and the joint 1 at the tip
6 (see FIG. 7) is an intermediate joint (universal joint) that connects the shaft 17 with the shaft 17 provided. Also,
Reference numeral 18 indicates a gear case.

As a shock absorbing steering apparatus, there is one disclosed in Japanese Patent Application Laid-Open No. 10-167083. This publication discloses that when a forward impact is applied via a steering column to a rear support bracket that supports an intermediate portion of an outer column that constitutes a steering column to a vehicle body, the rear support bracket together with the bolt is moved from the vehicle body. In this case, the steering column is displaced forward so that the steering column is displaced forward (see the above publication, page 5, column 7, lines 12 to 15; page 6, column 9, lines 1 to 2).
(Based on the description in line 0).

Further, as a vehicle steering column device, there is one disclosed in Japanese Patent Application Laid-Open No. 10-217981. In this publication, a guide portion that slides on a side wall portion of an upper clamp that supports a steering column jacket is provided on an energy absorbing member to prevent the steering column from moving right or left. (Page 2, column 2, line 39 to page 3, column 3, line 2; page 3, column 3, line 13 to line 36; page 3, page 4). Column 1st row-1st
Based on the description in line 4).

[0009]

In the prior art described above, when the steering column 3 is tilted (vertical swinging operation), the steering column 3 is rotated about the tilt shaft 7. An intermediate joint 15 is provided on the vehicle front side with respect to the tilt shaft 7 of the shaft 4, and furthermore, because of the vehicle mounting position of the tilt mechanism 1,
Since the distance (radius R in FIG. 7) between the intermediate joint 15 and the shaft hole 8 of the tilt shaft 7 is large, when the steering column 3 is rotated for tilt operation, the tilt shaft 7 of the steering shaft 4 is rotated. 7 is deviated from the rotation locus (solid line in FIG. 7) about the joint portion 16 of the shaft 17 (broken line in FIG. 7, radius R ₁ ), and the steering shaft 4 is twisted or bent. There was a problem.

Therefore, as shown in FIG. 8, another tilt-tilt bracket 9 having a small shape is formed, and when this tilt-tilt bracket 9 is fixed to the steering support member 13, the shaft hole 8 of the tilt shaft 7 is set in the vehicle. By moving forward, the distance (radius R in FIG. 7) between the intermediate joint 15 and the shaft hole 8 can be shortened. There is no U-shaped member 6 for shock absorption, and
The other main part of the tilt trower bracket 9 is only the parallel portion 9a parallel to the steering column 3, so if the vehicle receives an impact from the front and a load is applied to the steering wheel from the rear, the load of the parallel portion 9a is absorbed. There is a possibility that the property cannot be sufficiently obtained.

Further, both the shock absorbing type steering device disclosed in Japanese Patent Application Laid-Open No. 10-167083 and the vehicle steering column device disclosed in Japanese Patent Application Laid-Open No. 10-217981 have a problem that the structure becomes complicated. is there.

SUMMARY OF THE INVENTION The present invention has been made in view of this point, and forms a tilt trower bracket having an inclined plate portion orthogonal to a steering column, and has a shaft hole of a tilt shaft serving as a swing center, an intermediate joint and And to provide a tilt column bracket which avoids twisting of the steering shaft and easily absorbs impact load.

[0013]

According to the first aspect of the present invention,
In a tilt column bracket including a tilt troyer bracket that swingably supports a steering column with a tilt mechanism, the tilt troyer bracket includes an inclined plate portion formed forward and downward from left and right mounting plate portions fixed to the vehicle body, And a connecting wall portion connecting the left and right inclined plate portions to each other.

According to the first aspect of the present invention, the tilt trower bracket is formed on an inclined plate portion (standing wall portion) which is inclined downward and forward from the mounting plate portion, so that the vehicle receives a shock from the front and receives a shock from the steering wheel. When a load is applied from behind, the inclined plate portion is bent to absorb the load.

According to a second aspect of the present invention, in the first aspect, a shaft hole of a tilt shaft of the tilt trower bracket is formed at a front portion of the inclined plate portion formed at the lower front. Things.

According to the second aspect of the present invention, the position of the shaft hole of the tilt shaft of the tilt trower bracket and the distance between the intermediate joint at the tip of the steering shaft are reduced so that the steering column can be tilted. Avoid twisting and bending of the steering shaft.

According to a third aspect of the present invention, in the first or second aspect, an opening for inserting a bolt is provided in a bent portion of the mounting plate portion and the inclined plate portion. is there.

According to the third aspect of the present invention, since the tillor bracket to which the mounting parts such as the steering column are mounted is attached to the vehicle body from the rear of the vehicle, the vehicle can be mounted over the mounting plate portion and the inclined plate portion. An opening for bolt insertion is provided.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the inclined plate portion is disposed in a plane parallel to the vehicle width direction. Things.

According to the fourth aspect of the present invention, in order to easily absorb the load applied to the steering shaft when the vehicle receives an impact from the front portion, the inclined plate portion is provided within a plane parallel to the vehicle width direction. Let it be placed.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 and 2 which schematically show the main parts, and the same members as those shown in FIGS. Will be explained. FIG.
FIG. 2 shows a structure in which the steering column 3, the motor 12, and the like are integrally attached to the tilt trower bracket 21 shown in FIG. 2 from the rear side of the vehicle. In FIG. 1, the steering shaft 4 side is in front of the vehicle.

As shown in FIG. 2, the tilt trower bracket 21 is provided with left and right mounting plate portions 22 fixed to the vehicle body, and inclined plate portions bent forward and downward from the mounting plate portions 22, respectively. 23, a connecting plate portion 24 for connecting the left and right inclined plate portions 23, and a U-shaped plate in a top view in which an insertion hole 11 through which the steering shaft 4 is inserted is formed on the vehicle rear side of the connecting plate portion 24. 25. The inclined plate portion 23 on the left side of the vehicle is connected to a connecting plate portion 24 via a horizontal plate portion 26 provided at a front portion thereof.

Each surface of the mounting plate portion 22 and the inclined plate portion 23 is disposed orthogonal to the steering column 3.
That is, the mounting plate 22, the inclined plate 23, and the horizontal plate 2
6 are arranged in parallel planes formed in the vehicle width direction.

The upright wall 27 is formed by the inclined plate 23 and the connecting plate 24. In this manner, by forming the surface of the inclined plate portion 23 on the upright wall portion 27, the rigidity of the inclined plate portion 23 is reduced, and the steering wheel is easily deformed when subjected to an impact in the vehicle front direction (axial direction). The load is absorbed.

Further, a bent portion of the mounting plate portion 22 and the inclined plate portion 23 is provided with an opening for bolt insertion to be inserted into a bolt 14 fixed to the steering hanger bracket 13 on the vehicle body side shown in FIG. ing. An opening for bolt insertion is provided in the inclined plate portion 23 and has a rectangular opening 28 through which the head of the bolt 14 is inserted, and a shaft of the bolt 14 provided in the mounting plate portion 22 and communicating with the opening 28. And a slit 29 through which the portion is inserted. In FIG. 3, the arrow A indicates the direction in which the assembled components are assembled.

Further, a shaft hole 8 through which the tilt shaft 7 (see FIG. 6) is inserted is provided in a leg 25a on the right side of the vehicle of the U-shaped plate 25 when viewed from above. Further, a shaft hole 8 through which the tilt shaft 7 is inserted is also provided in a plate portion 24 a provided on the connecting plate portion 24 and parallel to the steering column 3. By positioning the connecting plate portion 24, that is, the upright wall portion 27 provided integrally with the shaft hole 8 of the tilt shaft 7 on the front side of the tilt trower bracket 21, the tilt shaft 7 and the intermediate joint 15 as shown in FIG. Can be reduced.
In FIG. 1, reference numeral 30 denotes an upper bracket.

With the structure described above, the steering column 3 and the motor 1
By assembling the integrated parts, such as 2 and the like, and fixing the tilt trower bracket 21 to the bolt 14 of the steering hanger bracket 13 of the vehicle body, the shaft hole 8 of the tilt shaft 7 is provided at the front of the inclined plate portion 23. So that the shaft hole 8
When the distance between the steering shaft 4 and the intermediate joint 15 that connects the shaft 17 at the tip of the steering shaft 4 is short and the tilt operation of the steering column 3 is performed, the rotation locus of the steering shaft 4 about the tilt shaft 7 (see FIG. The solid path, radius R) coincides with the rotation trajectory of the shaft 17 about the joint 16 (broken line in FIG. 4, radius R ₁ ), so that the steering shaft 4 is prevented from being twisted or bent. .

An engaging portion of the vehicle body side steering hanger bracket 13 for engaging with the bolt 14 is provided on the inclined plate portion 23,
Furthermore, since the inclined plate portion 23 is disposed orthogonal to the steering column 3, that is, the inclined plate portion 23 is disposed parallel to the surface in the vehicle width direction, the vehicle receives an impact from the front, and the steering shaft 4 is moved from the rear. When a load is received, as shown in FIG. 5, the inclined plate portion 23 is easily deformed without being pulled, so that the load is reliably absorbed.

[0029]

Since the present invention is a tilt column bracket constructed as described above, according to the first aspect of the invention, the tilt plate bracket is provided with an inclined plate portion orthogonal to the steering column. With this arrangement, when the vehicle receives an impact from the front and a load is applied to the steering wheel from the rear, the inclined plate portion is easily bent, and the load can be easily absorbed.

According to the second aspect of the present invention, since the shaft hole of the tilt shaft of the tilt trower bracket is formed at the front of the inclined plate portion, the position of the tilt shaft of the tilt trower bracket and the tip of the steering shaft are provided. The distance from the middle joint of the steering column is short, and when tilting the steering column,
The twisting and bending of the steering shaft can be avoided.

According to the third aspect of the present invention, since the bolt insertion opening for mounting the vehicle body is provided across the mounting plate portion and the inclined plate portion, assembly parts such as a steering column can be provided. The mounted tillor bracket can be securely assembled to the vehicle body from the rear of the vehicle.

According to the fourth aspect of the present invention, since the inclined plate portion is disposed in a plane parallel to the vehicle width direction,
When the vehicle receives an impact from the front, the load applied to the steering shaft in the axial direction from the rear of the vehicle body can be easily absorbed.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing a main part of an embodiment of the present invention.

FIG. 2 is a perspective view of the tillor bracket shown in FIG. 1;

FIG. 3 is a perspective view when the one shown in FIG. 1 is fixed to a vehicle body.

FIG. 4 is a schematic diagram of a rotation trajectory when the steering column shown in FIG. 1 is tilted.

FIG. 5 is a schematic view showing a state where the tilt troyer bracket shown in FIG. 3 is deformed.

FIG. 6 is a side view of a tilt column bracket to which a conventional steering column is assembled.

FIG. 7 is a schematic diagram of a rotation locus when a conventional steering column is tilted.

FIG. 8 is a perspective view of another conventional tillor bracket.

[Explanation of symbols]

 REFERENCE SIGNS LIST 3 steering column 4 steering shaft 14 bolt 21 tilt trower bracket 22 mounting plate 23 inclined plate 24 connecting plate 27 upright wall 28 opening 29 slit

Claims (4)

[Claims] 1. A tilt column bracket having a tilt trouser bracket for swingably supporting a steering column with a tilt mechanism, wherein the tilt trower bracket is formed to be lowered forward from right and left mounting plates fixed to a vehicle body. A tilt column bracket comprising an upright wall portion including an inclined plate portion and a connecting plate portion connecting the left and right inclined plate portions. 2. The tilt column bracket according to claim 1, wherein a shaft hole of a tilt shaft of the tilt trower bracket is formed at a front portion of the inclined plate portion formed at the lower front. 3. An opening for bolt insertion is provided in a bent portion of the mounting plate portion and the inclined plate portion.
Or the tilt column bracket according to 2. 4. The tilt column bracket according to claim 1, wherein the inclined plate portion is disposed in a plane parallel to the vehicle width direction.